AELEC QY8 Bluetooth Headphones V4.1 Bluetooth Headphones Wireless Earphones Sweatproof Sport Earbuds Headsets Noise Cancelling For Iphone for Samsung for Ipad for Running hiking cycling (Black) Upgrade version of QY7: aelec QY8 is equipped with Bluetooth 4.1 + EDR APT-X audio decode technology along with CVC 6.0 intelligence noise reduction system, brings you wonderful acoustic bliss. Convenient combination: voice control combined with built-in mic, enables you to answer or reject phone calls hands-free, perfect for daily work outs. Strong battery endurance: high quality polymer 80mAh battery with professional energy saving design prolongs play time up to 5-7 hours of continuous use on a single charge, along with fast charging time and standby time for 175 hours User-friendly design: 3 different sizes of ear-tips and ear-hooks to fit your ears perfectly and securely 100% Sweat-proof: designed for fitness enthusiasts who enjoy both music and sports activities at the same time. QY8 headphones comes with a 45-day money back guarantee & 18-month worry-free warranty.